Home / 121,027.61-166,949.93-72,617.02

Finding the Fourth Proportional to 121,027.61, 166,949.93 and 72,617.02

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Solution

The fourth proportional to 121,027.61, 166,949.93 and 72,617.02 is: 100,170.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,027.61 : 166,949.93 = 72,617.02 : x
  2. Step 2: Convert to fraction form
    121,027.61/166,949.93 = 72,617.02/x
  3. Step 3: Cross multiply
    121,027.61x = 166,949.93 × 72,617.02
  4. Step 4: Simplify right side
    121,027.61x = 12,123,406,169.98
  5. Step 5: Solve for x
    x = 12,123,406,169.98/121,027.61
  6. Step 6: Final answer
    x = 100,170.58

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.